US Patent 11171993 Cross-origin communication in restricted computer environments

This specification discloses techniques for communicating data between a first execution context on a computing system and a second execution context on the computing system. The first execution context can execute content from a first origin, the second execution context can execute content from a second origin that is different from the first origin, and the first execution context and the second execution context can each be restricted from accessing data of the other as a result of a same-origin policy implemented by the computing system. The method can include establishing a bi-directional communication channel between the first execution context and the second execution context.